Deep Learning-Based Prediction of Strength and Permeability of Pervious Concrete Using an Enhanced IDBN Model
摘要
Pervious concrete is widely recognized for its role in sustainable urban development, offering benefits such as stormwater management and groundwater recharge. Accurate prediction of its mechanical and permeability-related properties is essential for optimizing its performance in green infrastructure applications.
ProblemDespite its advantages, pervious concrete presents challenges in performance prediction due to its complex pore structure and variable strength characteristics. Conventional predictive models often fail to deliver sufficient accuracy across key properties such as compressive strength, tensile strength, flexural strength, permeability, and porosity, particularly over different curing periods.
MethodsThis research introduces a novel deep learning-based predictive framework that employs an Improved Deep Belief Network (IDBN) optimized through a Self-Improved Randomized Population Optimization (SI-RPO) algorithm. The model is developed using experimentally obtained data to predict key properties of pervious concrete such as compressive strength, split tensile strength, flexural strength, permeability, and porosity at 7 and 28 days of curing. The SI-RPO algorithm is specifically designed to fine-tune the network’s weights and biases, thereby improving convergence speed, avoiding local minima, and enhancing the model’s generalization ability. This hybrid approach ensures robust and accurate prediction of pervious concrete performance metrics, demonstrating superior effectiveness compared to conventional optimization techniques.
ResultThe proposed SI-RPO optimized IDBN model outperforms conventional approaches, specifically, for 7-day compressive strength, the model achieved a minimum Mean Squared Error (MSE) of 0.021, and for 28-day strength, it yielded the lowest Mean Absolute Percentage Error (MAPE) of 0.034. These results highlight the effectiveness of the proposed method in accurately predicting pervious concrete properties and support its application in sustainable construction practices.